JPH01176876A - Solenoid valve - Google Patents

Solenoid valve

Info

Publication number
JPH01176876A
JPH01176876A JP33432987A JP33432987A JPH01176876A JP H01176876 A JPH01176876 A JP H01176876A JP 33432987 A JP33432987 A JP 33432987A JP 33432987 A JP33432987 A JP 33432987A JP H01176876 A JPH01176876 A JP H01176876A
Authority
JP
Japan
Prior art keywords
valve
main valve
pilot valve
electromagnetic coil
pilot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP33432987A
Other languages
Japanese (ja)
Inventor
Norio Niimura
紀夫 新村
Kosaku Kubo
久保 幸作
Shigeki Uno
茂岐 宇野
Kazunari Kawahara
一成 川原
Kazuya Ariyama
和也 有山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP33432987A priority Critical patent/JPH01176876A/en
Publication of JPH01176876A publication Critical patent/JPH01176876A/en
Pending legal-status Critical Current

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  • Magnetically Actuated Valves (AREA)

Abstract

PURPOSE:To open a valve even upon abnormal increase of gas pressure by arranging a pilot valve around a small central hole and providing a main valve for opening/closing a main valve seat. CONSTITUTION:Under initial state where power is fed to an electromagnetic coil 17, only a pilot valve 18 attracted to the electromagnetic coil 17 while resisting against a spring 19 opens, and a small quantity of gas flows out through the pilot valve seat 13a of a main valve 13. Consequently, the force F1 of gas pressure P1 to be applied onto the main valve 13 is reduced considerably, and a valve seat 12a is opened by means of the main valve 13 through attracting force of the electromagnetic coil 17. Since force F1 of the gas pressure P1 is scarcely applied onto the pilot valve 18, a pilot valve 14 can be opened even when the gas pressure P1 increases.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ガス燃焼機器のガス通路に設け、ガスの流れ
を開閉する電磁弁に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a solenoid valve provided in a gas passage of a gas combustion device to open and close the flow of gas.

従来の技術 近年、電磁弁は、ガス燃焼機器の小型コンパクト化に供
ない小型化が、要求されている。
2. Description of the Related Art In recent years, electromagnetic valves have been required to be smaller in size to accommodate the miniaturization of gas combustion equipment.

以下図面を参照しながら、L述した従来の電磁弁の一例
について説明する。
An example of the conventional electromagnetic valve mentioned above will be described below with reference to the drawings.

第4図は従来の電磁弁の構成を示すものである。FIG. 4 shows the structure of a conventional solenoid valve.

第4図において、1はガス通路であり、弁座1aを設け
である。2は主弁であり、止め金具3と主弁止め板4、
主弁押え板5によって、主弁軸6に固定されている。主
弁2は、スプリング7によって電磁コイル8に通電され
ていない場合、弁座1aに押しつけられガスをシールし
ている。次に電磁コイル8に通電された場合、主弁軸6
を吸着することにより、主弁2が弁座1aよりはなれて
開弁し、ガス通路1を開ける。また、9はパツキン、1
0はコイル支持板、11はビスである。
In FIG. 4, 1 is a gas passage, and a valve seat 1a is provided. 2 is a main valve, which includes a stopper 3 and a main valve stop plate 4;
It is fixed to the main valve shaft 6 by a main valve holding plate 5. When the electromagnetic coil 8 is not energized by the spring 7, the main valve 2 is pressed against the valve seat 1a to seal the gas. Next, when the electromagnetic coil 8 is energized, the main valve shaft 6
By adsorbing the main valve 2, the main valve 2 moves away from the valve seat 1a and opens, thereby opening the gas passage 1. Also, 9 is Patsukin, 1
0 is a coil support plate, and 11 is a screw.

発明が解決しようとする問題点 しかしながら上記のような構成では、電磁コイル8は通
電し、主弁2を開弁する場合、主弁2に加わるガス圧力
P1により発生する力F1と、スプリング7の力F2の
和に抗して主弁2を開弁しなければならないので、電磁
コイル8により発生させる吸着力を多(必要とし、電磁
コイル8が、非常に大きくなり、電磁弁が大きくなるか
、または電磁コイル8に多量の電流を通電する必要があ
るため消費電力が増大するという問題点を有していた。
Problems to be Solved by the Invention However, in the above configuration, when the electromagnetic coil 8 is energized and the main valve 2 is opened, the force F1 generated by the gas pressure P1 applied to the main valve 2 and the force F1 of the spring 7 are Since the main valve 2 must be opened against the sum of the forces F2, the attraction force generated by the electromagnetic coil 8 is required to be large, and the electromagnetic coil 8 becomes very large, causing the electromagnetic valve to become large. , or because it is necessary to supply a large amount of current to the electromagnetic coil 8, there is a problem that power consumption increases.

また、ガス配管が太陽光などで熱っせられ、ガス圧力P
1が異常に増加した場合(500mmH2゜以上)でも
、その異常圧で電磁弁が開弁しないという問題点を有し
ていた。
In addition, gas piping may be heated by sunlight, etc., and the gas pressure P
1 increases abnormally (500 mmH2° or more), there is a problem in that the electromagnetic valve does not open due to the abnormal pressure.

本発明は上記問題点に鑑み、電磁弁のコイル部を小さく
するとともに、低消費電力で、ガス圧力が異常に増加し
た場合でも、異常なく開弁する電磁弁を提供するもので
ある。
In view of the above-mentioned problems, the present invention provides a solenoid valve that has a small coil portion, consumes low power, and opens without abnormality even when gas pressure increases abnormally.

問題点を解決するための手段 上記問題点を解決するために本発明の電磁弁は、通路内
に設けた主弁座と、中央に小孔を有し、その小孔の周囲
にパイロット弁座を配し、主弁座を開閉する主弁と、パ
イロット弁座を開閉するパイロット弁と、主弁の軸とパ
イロット弁の軸を同一中心とした電磁コイル部を備え、
この電磁コイル部に通電することにより、パイロット弁
と主弁を開弁してガス通路を開き、電磁コイル部に通電
しない場合は、パイロット弁と主弁が開弁し、ガス通路
を閉ざすという構成を備えたものである。
Means for Solving the Problems In order to solve the above problems, the solenoid valve of the present invention has a main valve seat provided in a passage, a small hole in the center, and a pilot valve seat around the small hole. It is equipped with a main valve that opens and closes the main valve seat, a pilot valve that opens and closes the pilot valve seat, and an electromagnetic coil that is centered on the axis of the main valve and the axis of the pilot valve.
By energizing this electromagnetic coil, the pilot valve and main valve open and the gas passage opens; when the electromagnetic coil is not energized, the pilot valve and the main valve open and close the gas passage. It is equipped with the following.

作  用 本発明は上記した構成によって、ガス圧力P1による力
F1にほとんど影響されないパイロット弁を有すること
により、電磁コイル部に通電時の初期は、まずパイロッ
ト弁を開弁する。次に、パイロット弁の開弁により、主
弁に加わるガス圧力P1による力F1は、大きく軽減さ
れ、電磁コイル部により発生させる力は極めて少なくす
ることができる。
Operation The present invention has the above-described configuration and has a pilot valve that is almost unaffected by the force F1 due to the gas pressure P1, so that the pilot valve is first opened at the initial stage when the electromagnetic coil section is energized. Next, by opening the pilot valve, the force F1 due to the gas pressure P1 applied to the main valve is greatly reduced, and the force generated by the electromagnetic coil portion can be extremely reduced.

以上により、電磁弁のコイル部を小さくするとともに低
消費電力で、ガス圧力が異常に増加した場合でも、ガス
圧力P1の影響を受けずに開弁できることとなる。
As described above, the coil portion of the electromagnetic valve can be made small and power consumption can be reduced, and even if the gas pressure increases abnormally, the valve can be opened without being affected by the gas pressure P1.

実施例 以下本発明の一実施例の電磁弁について、図面を参照し
ながら説明する。
Embodiment Hereinafter, a solenoid valve according to an embodiment of the present invention will be described with reference to the drawings.

第1図は本発明の実施例における電磁弁の構成を示すも
のである。第1図において、12はガス通路であり、弁
座12Mを設けである。13は主弁であり、主弁押え板
14によって、主弁軸15に固定されている。また、主
弁13にはパイロット弁座13aを設けである。主弁1
3は、スプリング16によって、電磁コイル17に通電
されていない場合、弁座12aに押しつけられ、ガスを
シールしている。次に、18はパイロット弁であり、主
弁13と同様に、スプリング19によって、電磁コイル
17に通電されていない場合、パイロット弁座13aに
押しつけられガスをシールしている。図中9はパツキン
、10はコイル支持板、11はビスである。
FIG. 1 shows the configuration of a solenoid valve in an embodiment of the present invention. In FIG. 1, 12 is a gas passage and is provided with a valve seat 12M. 13 is a main valve, which is fixed to a main valve shaft 15 by a main valve holding plate 14. Further, the main valve 13 is provided with a pilot valve seat 13a. Main valve 1
3 is pressed against the valve seat 12a by a spring 16 when the electromagnetic coil 17 is not energized, thereby sealing the gas. Next, 18 is a pilot valve, which, like the main valve 13, is pressed against the pilot valve seat 13a by a spring 19 to seal gas when the electromagnetic coil 17 is not energized. In the figure, 9 is a packing, 10 is a coil support plate, and 11 is a screw.

以上のように構成された電磁弁について、以下第1図、
第2図及び第3図を用いてその動作を説明する。
The solenoid valve configured as above is shown in Figure 1 below.
The operation will be explained using FIGS. 2 and 3.

まず第1図は電磁コイル17に不通電で、閉弁している
状態を示す。次に第2図は電磁コイル17に通電した初
期状態を示すものであってスプリング19に抗し電磁コ
イル17に吸着されたパイロット弁1Bのみが開弁じ、
主弁13のパイロット弁座13mより少量のガスが流れ
出している。
First, FIG. 1 shows a state in which the electromagnetic coil 17 is de-energized and the valve is closed. Next, FIG. 2 shows the initial state in which the electromagnetic coil 17 is energized, and only the pilot valve 1B, which is attracted to the electromagnetic coil 17 against the spring 19, opens.
A small amount of gas is flowing out from the pilot valve seat 13m of the main valve 13.

このガスの流出により、主弁13に加わるガス圧力P1
による力F1は、大きく軽減される。その結果、第3図
に示すように、既に通電されている電磁コイル17の吸
着力で充分に主弁押え板15がスプリング7に抗して吸
着し、主弁13が弁座1aを開弁する。
Gas pressure P1 applied to the main valve 13 due to the outflow of this gas
The force F1 caused by this is greatly reduced. As a result, as shown in FIG. 3, the main valve holding plate 15 is sufficiently attracted against the spring 7 by the attraction force of the electromagnetic coil 17 which is already energized, and the main valve 13 opens the valve seat 1a. do.

また本実施例では、パイロット弁14を開弁する時、パ
イロット弁14には、ガス圧力P1による力F1が、は
とんどかからないため、ガス圧力P1が上昇してもパイ
ロット弁14を開弁することができる。
Further, in this embodiment, when the pilot valve 14 is opened, the force F1 due to the gas pressure P1 is not applied to the pilot valve 14, so even if the gas pressure P1 increases, the pilot valve 14 is opened. can do.

発明の効果 以上のように本発明によれば、ガス通路内に設けた主弁
座と、中央に小孔を有し、その小孔の周囲にパイロット
弁座を配し、主弁座を開閉する主弁と、前記パイロット
弁座を開閉するパイロット弁と、主弁の軸とパイロット
弁の軸を同一中心とした電磁コイルを備え、電磁コイル
に通電することにより、パイロット弁と主弁を開弁じガ
ス通路を開き、電磁コイル部に通電しない場合は、パイ
ロット弁と主弁が閉弁し、ガス通路を閉ざす構成を備え
ることにより、電磁弁のコイル部を小さくするとともに
、低消費電力で、ガス圧力が異常に増加した場合でも異
常なく開弁することができる。
Effects of the Invention As described above, according to the present invention, there is a main valve seat provided in the gas passage, a small hole in the center, and a pilot valve seat arranged around the small hole to open and close the main valve seat. A main valve that opens and closes the pilot valve seat, an electromagnetic coil that is centered on the axis of the main valve and the axis of the pilot valve, and the pilot valve and the main valve are opened by energizing the electromagnetic coil. When the valve gas passage is opened and the electromagnetic coil section is not energized, the pilot valve and main valve are closed and the gas passage is closed.This allows the coil section of the electromagnetic valve to be made smaller and consumes less power. Even if the gas pressure increases abnormally, the valve can be opened without any abnormality.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例における電磁弁の構成を示す
断面図、第2図は同動作の初期を示す断面図、第3図は
同動作中を示す断面図、第4図は従来の電磁弁の構成を
示す断面図である。 12・・・・・・ガス通路、12a・・・・・・主弁座
、13・・・・・・主弁、13g・・・・・・パイロッ
ト弁座、15・・・・・・主弁軸、17・・・・・・電
磁コイル、18・・・・・・パイロット軸。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名!2
−ガス通路 12a−一一主弁度 13−−パイロット弁座 r’t−t aコイル t8・・−パイロット弁 第1図 第2図 第3図
Fig. 1 is a sectional view showing the configuration of a solenoid valve in an embodiment of the present invention, Fig. 2 is a sectional view showing the initial stage of the same operation, Fig. 3 is a sectional view showing the same operation in progress, and Fig. 4 is a conventional one. FIG. 3 is a sectional view showing the configuration of a solenoid valve. 12...Gas passage, 12a...Main valve seat, 13...Main valve, 13g...Pilot valve seat, 15...Main Valve shaft, 17... Electromagnetic coil, 18... Pilot shaft. Name of agent: Patent attorney Toshio Nakao and 1 other person! 2
-Gas passage 12a-11 Main valve degree 13--Pilot valve seat r't-t a coil t8...-Pilot valve Fig. 1 Fig. 2 Fig. 3

Claims (1)

【特許請求の範囲】[Claims] ガス通路と、前記ガス通路内に設けた主弁座と、中央に
小孔を有し、その小孔の周囲にパイロット弁座を配し前
記主弁座を開閉する主弁と、前記パイロット弁座を開閉
するパイロット弁と、前記主弁の軸と前記パイロット弁
の軸を同一中心とした電磁コイルとを備え、前記電磁コ
イルに通電することにより、前記パイロット弁と前記主
弁とを開弁してガス通路を開き、前記電磁コイルに通電
しない場合は、前記パイロット弁と前記主弁とが閉弁し
ガス通路を閉ざす構成とした電磁弁。
a gas passage, a main valve seat provided in the gas passage, a main valve having a small hole in the center and a pilot valve seat arranged around the small hole to open and close the main valve seat, and the pilot valve. The pilot valve is provided with a pilot valve that opens and closes a seat, and an electromagnetic coil that is centered on the axis of the main valve and the axis of the pilot valve, and the pilot valve and the main valve are opened by energizing the electromagnetic coil. The electromagnetic valve is configured such that when the electromagnetic coil is not energized, the pilot valve and the main valve are closed to close the gas passage.
JP33432987A 1987-12-29 1987-12-29 Solenoid valve Pending JPH01176876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33432987A JPH01176876A (en) 1987-12-29 1987-12-29 Solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33432987A JPH01176876A (en) 1987-12-29 1987-12-29 Solenoid valve

Publications (1)

Publication Number Publication Date
JPH01176876A true JPH01176876A (en) 1989-07-13

Family

ID=18276140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33432987A Pending JPH01176876A (en) 1987-12-29 1987-12-29 Solenoid valve

Country Status (1)

Country Link
JP (1) JPH01176876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11182693A (en) * 1997-12-18 1999-07-06 Ricoh Elemex Corp Fluid shutoff valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5790474A (en) * 1980-11-22 1982-06-05 Taimu Giken Kk Flow change method in solenoid valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5790474A (en) * 1980-11-22 1982-06-05 Taimu Giken Kk Flow change method in solenoid valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11182693A (en) * 1997-12-18 1999-07-06 Ricoh Elemex Corp Fluid shutoff valve

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